A must listen speaker for classical and opera is the b&W 801 series speakers. Many classical and opera albums are mastered on these, and for good reason. They are one of the few speakers with enormous bass impact, and excellent vocals. They tend to like powerful solid state amps and are best suited to large rooms with very solid floors.
Best system for opera lover at $30,000
One of my friends asked me to recommend a system for her new house. She and her husband are opera lovers. Also love jazz and othe classical music. Her budget is $30,000, and do not decide to buy new items or used ones. My suggestion is Thiel CS6 + Mark Levinson 380 and 333 + Wadia 860. Please give me your advice.